高功率因数双边直线游标永磁电机的设计与分析
发布时间：2018-10-14 16:38
【摘要】：近年,适用于直线长行程领域、具有高性能、低成本的直线电机成为研究热门。现有电机都各有缺点不适合直线长行程应用,直线感应电机功率因数和效率较低,永磁直线电机长行程时永磁体用量多、成本高,普通定子永磁型电机的推力密度不高。基于“磁齿轮效应”的游标永磁(Vernier Permanent-Magnet,VPM)电机的问世,提高了永磁电机的转矩/推力密度,传统VPM电机长行程造价高,只有定子永磁型游标电机可以降低成本,但是VPM电机功率因数普遍较低,阻碍了其工程应用。现有VPM电机中,只有一种双定子的VPM电机可以提高功率因数,但是该电机为转子永磁体,不适合直线长行程应用。本文提出了一种新型的双边直线游标永磁(Double-side Linear Vernier Permanent-Magnet,DS-LVPM)电机,该电机是双边的初级永磁型VPM电机,具有高推力密度和高功率因数的优点,应用在长行程领域投资成本低。论文研究成果有如下几方面:1.解释VPM电机与磁齿轮电机的关系,借助磁齿轮分析方法,研究VPM电机的工作原理,阐释磁场调制机理,并用气隙磁密和谐波分析验证。2.对比分析普通永磁电机和VPM电机磁漏情况,说明电感与漏磁的关系,结合功率因数计算式,得出VPM电机低功率因数的原因。3.对现有的双定子VPM电机磁路分析,阐述本文电机设计思路,提出新型DS-LVPM电机,介绍电机结构特征和绕组连接方式,对磁链变化、漏磁、调制机理研究来解释工作原理。4.提出程序化电机设计方法,确定电机槽极配合,选择最佳槽极配合作为样机方案,并对方案进行参数优化,得到最终样机模型的设计参数。5.基于Ansoft Maxwell对最终样机方案进行有限元分析,仿真得到其空载反电动势、定位力、推力、电感、损耗、加载电压和电流等电磁性能的波形和数据,通过计算得到推力密度、功率因数和效率等参数,初步验证电机性能。6.加工样机,搭建实验平台,实验测定电机的不同速度下的反电动势、电阻和电感、不同电流的静态推力,验证仿真结果。
[Abstract]:In recent years, linear motor with high performance and low cost has become a hot research area. All the existing motors are not suitable for the application of linear long stroke. The power factor and efficiency of linear induction motor are low. The permanent magnet of permanent magnet linear motor with long stroke is more expensive and the thrust density of ordinary stator permanent magnet motor is not high. The advent of Vernier permanent Magnet (Vernier Permanent-Magnet,VPM) motor based on "magnetic gear effect" improves the torque / thrust density of permanent magnet motor. The cost of traditional VPM motor with long stroke is high, only stator permanent magnet Vernier motor can reduce the cost. However, the power factor of VPM motor is generally low, which hinders its engineering application. Among the existing VPM motors, only one kind of VPM motor with double stator can improve the power factor, but the motor is a permanent rotor magnet, which is not suitable for linear long stroke application. In this paper, a novel bilateral linear Vernier permanent magnet (Double-side Linear Vernier Permanent-Magnet,DS-LVPM) motor is proposed. It is a primary permanent magnet VPM motor with high thrust density and high power factor. The research results are as follows: 1. This paper explains the relationship between VPM motor and magnetic gear motor, studies the working principle of VPM motor by means of magnetic gear analysis method, explains the mechanism of magnetic field modulation, and verifies by air gap magnetic density and harmonic analysis. 2. By comparing and analyzing the flux leakage of ordinary permanent magnet motor and VPM motor, the relationship between inductance and magnetic flux leakage is explained, and the reason of low power factor of VPM motor is obtained by combining the calculation formula of power factor. Based on the analysis of the magnetic circuit of the existing double-stator VPM motor, this paper expounds the design idea of the motor, puts forward a new type of DS-LVPM motor, introduces the structure characteristics and winding connection mode of the motor, and explains the working principle by studying the flux change, flux leakage and modulation mechanism. 4. This paper puts forward the design method of programmed motor, determines the motor slot pole matching, selects the best slot pole fit as the prototype scheme, and optimizes the parameters of the scheme, and obtains the design parameters of the final prototype model. 5. Based on the finite element analysis of the final prototype scheme based on Ansoft Maxwell, the electromagnetic waveforms and data of its no-load backEMF, positioning force, thrust, inductance, loss, load voltage and current are obtained by simulation, and the thrust density is obtained by calculation. Power factor and efficiency and other parameters, preliminary verification of motor performance. 6. The prototype was processed, the experimental platform was set up, and the static thrust of the back EMF, resistance and inductance, and the different current were measured at different speeds of the motor, and the simulation results were verified.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM351
本文编号：2271014
[Abstract]:In recent years, linear motor with high performance and low cost has become a hot research area. All the existing motors are not suitable for the application of linear long stroke. The power factor and efficiency of linear induction motor are low. The permanent magnet of permanent magnet linear motor with long stroke is more expensive and the thrust density of ordinary stator permanent magnet motor is not high. The advent of Vernier permanent Magnet (Vernier Permanent-Magnet,VPM) motor based on "magnetic gear effect" improves the torque / thrust density of permanent magnet motor. The cost of traditional VPM motor with long stroke is high, only stator permanent magnet Vernier motor can reduce the cost. However, the power factor of VPM motor is generally low, which hinders its engineering application. Among the existing VPM motors, only one kind of VPM motor with double stator can improve the power factor, but the motor is a permanent rotor magnet, which is not suitable for linear long stroke application. In this paper, a novel bilateral linear Vernier permanent magnet (Double-side Linear Vernier Permanent-Magnet,DS-LVPM) motor is proposed. It is a primary permanent magnet VPM motor with high thrust density and high power factor. The research results are as follows: 1. This paper explains the relationship between VPM motor and magnetic gear motor, studies the working principle of VPM motor by means of magnetic gear analysis method, explains the mechanism of magnetic field modulation, and verifies by air gap magnetic density and harmonic analysis. 2. By comparing and analyzing the flux leakage of ordinary permanent magnet motor and VPM motor, the relationship between inductance and magnetic flux leakage is explained, and the reason of low power factor of VPM motor is obtained by combining the calculation formula of power factor. Based on the analysis of the magnetic circuit of the existing double-stator VPM motor, this paper expounds the design idea of the motor, puts forward a new type of DS-LVPM motor, introduces the structure characteristics and winding connection mode of the motor, and explains the working principle by studying the flux change, flux leakage and modulation mechanism. 4. This paper puts forward the design method of programmed motor, determines the motor slot pole matching, selects the best slot pole fit as the prototype scheme, and optimizes the parameters of the scheme, and obtains the design parameters of the final prototype model. 5. Based on the finite element analysis of the final prototype scheme based on Ansoft Maxwell, the electromagnetic waveforms and data of its no-load backEMF, positioning force, thrust, inductance, loss, load voltage and current are obtained by simulation, and the thrust density is obtained by calculation. Power factor and efficiency and other parameters, preliminary verification of motor performance. 6. The prototype was processed, the experimental platform was set up, and the static thrust of the back EMF, resistance and inductance, and the different current were measured at different speeds of the motor, and the simulation results were verified.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM351
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